title: Primary cutaneous B-cell lymphoma in a 74-year-old Caucasian male.
mesh_terms: D000368:Aged; D001132:Arm; D003937:Diagnosis, Differential; D006801:Humans; D016393:Lymphoma, B-Cell / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology